Auxiliary thread extractor



Dec. 21 ,'1926.. 1,611,776

G. A. PIEPENBRING AUXILIARY THREAD EXTRACTOR VFiled July 2s, 1925 4 sheets-sheet 2 wuudioz Dec. 21 1926.4

G. A. PIEP'ENBRING AUXLIARY THREAD EXTRACTOR Filed July 2B, 1925 4 sheets-sheet s Dec. 21 1926. LLTS G. `A. PEPENBRING AUXILIARY THREAD EXTRAGTOR Filed July 2S, 1925 d. Sheets-Sheet 4 t Amarifzs;

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Y Mounted between these two plates in a suita plurality of spaced arms forming or carrying cutter blades'. ln the construction shown the cutter has thel same number ot blades as the picker has arms 23, and the7 are mounted to overlap so that as the picker and cutter rotate lthe blades 26 pass through the spaces between the arms 23 and the arms 23 pass through the spaces bet-Ween the cutter blades, tlirougli'suita le geaiingvwhich will preseiitlybedescribed.l Cooperating` with the cutter blades 26 is a stationary blade 27.so thatl the threads are cut with a shearing operation between thercut'ter blades and the stationary blade. vThe stationary blade is preferably n'iounted in a removable plate' 28 mounted in an opening' 29 in the top plate The cutter 2l mounted on an up-V this operation being secured 18 leading` to the chamber 19, this plate beiup; secured in position by suitable screws 30.

The plato 28 is provided on one side thereotf with` anotch 3l through which the'picker rotates so that 'the picker is partly above and paitlybelow this plate and is rotated so that theVL teeth pass down through'this notch, and the stationary cutter blade 27 is mounted at one side of this notch with'its cuttingedge below the plate. Mounted above this plate is the guiding means for the lace so that the lace will be placed in proper pol sition relative to the picker. ln the form shown in Figs. l 'to G the guiding means is arranged to present two auxiliary threads to the picking and cutting means atv the saine time. The particular lace shown comprises two separate lace strips 32 with theirvedges connectedtogether by means ot the auXiliary threads 33to form a tube, which is the forni in which the lace is woven. It is to be noted that the opposed edges 3e ot the two strips are spaced a short distance apart and the auxiliary threads 33 pass back and forth over this space Vfrom one strip of lace to the.

other, as indicated in Figs. 2 and et. The guiding means ffor the lace comprises two members 35 having upwardly rounded por tions 3G in which are star wheels 37 arranged with the points of the teeth'proj'ecting above the tops of the guide members to engage the lace and prevent its sliding laterally, and to thus hold thek space between the edges of the vlace in proper alignment with the picker 20. After the lace passes overl the' rounded portions 36 it is forced downwardly to a po-V means and past the picker by means ot V'teedl` These rollers are placed oneV ingi'ollers 42. above the otherjand preferably are vproV vided with hnurledsurfaces so as to grip the lace. llhey are rotated by a lsuitable driving; connection and are in driving connection with each through thefge'ars 43. The upper roll is mounted on a pivoted support da, this support being pivoted by means of a A wire trame 41 is so located that theV pin l5 laterally at one side of the kroll so y that by swinging the support about this pivot the upper roll may be swungaway from the lower roll to allow for insertion or removal of 'the lace to or :from between the rolls. rlhe support carries a catch i6 pivoted `to the support at 47, and' hasV a hook t8 arranged tor engage' under a lug 49 to hold Y the upper rollelevated when swung; 'away trom the lower roll, a spring 50 tending' to hold the hook yin holding;L position. A han-V dle 5l on the support is provided with a rod 52 slidably mounted therein and which Y*may be depressed by means of ka button 53 at its upper end to release the catch 46. i

The operation of this portion 'ot the device" is as follows: thepickcr 2O and the cutter 2l. are connected through suitable driviiigmechanism7 which will later be described, so that they rotate in certain timing relation, an arm and a blade 26 passing alternately by thestationary blade 2'?, so that the arms pas through the spaces between the blades 2G and the blades 26 pass through the spaces between the arms 23. rl'he lace is drawn through the guiding means 35, 38

and by the rollers 4-2 and is held in proper positioniby these guidingl meanswith the opposed li'ee edges 3ft of the strips ot lace separated as indicated in Figs. 2 and and Yas the lace is drawn forwardly the transverse portions oi the auxiliary threads v r. 1 if f .1 aie moved into tue path oi increment or tno teeth 2a of the picker. 'ihese teeth engage these traiisverie portions as the picker rotates and pulls the portion ot the auaili.arg.I thread be veen the point oli eng` ement and the tree end of the thread downwardly through the notch 3l and in liront of the the short tree end of the auxiliary thread being indicated at 5d, and it will he noted stationary blade 2T, as indicated in 8. Y

that .this portion 'ot the auxiliary thread is Y entirely roii'ioi'ed trein the lace. titer it is Vbeen di'awn entirely clear from the lace.`

After this piece of thread has been cut the set of teeth on the next arm of the picker will engage another transverse portion of the thread and pull the shci't portion of the thread adjacentthe rlast cut from the lace down through the notch 31 in front of the stationary blade 27, where it is cut off by the next movable-blade 26, and so on, the

operation being continuous. It will be iinderstood that the thread is iif'ithdrawn from the lace by pulling downwardly a short length thereof adjacent the cut end and these short lengths are progressively cut ofip as soon as they are withdrawn from the lace. rlhus the thread is positively and entirely removed from the lace and without in any way injuring the lace.

' In order to remove these cut ends of the thread andprevent their passing back into the lace or into the mechanism, the chamber 19 in which the picker and cutter are inount ed is connected by means vof a pipe tofa suitable suction device, as a fan, which draws air through the chamber and carries the cut pieces of thread out to a suitable teparating device;Y y

The devices are driven from a shaft '5b which is driven by means of a suitable pulleyV 57 and a belt 58 from any suitable source of pewer. The pulley may include a hand wheel in order that the device may be turned over by hand in setting up or for any other reasons. The shaft 22 for the picker 1s driven from upright shaft 59 through beveled gears 60 and the shaft 59 is driven from the shaft 56 by the beveled gears Gl. The uprightshaft 25 for the cutter is driven from the shaft 56 through the spiral gears 62. The feeding rolls aredriven from the lmain shaft 56 through a worm 63 vand thev worm gear 64. This worin gear drives a spur gear meshing with a gear 66 on a shaft 67 which shaft also carries the gears 68 and 69. An upright vshaft 70 carries gear 71 which is free to rot-ate on the shaft and also carries a collarr72 which is free to slide longitudinally on the shaft but is splined to the shaft by means of the key 73 so as to rotate` therewith. This collarv carries a gear 74 which may mesh with the gear 68, and also carriesa gear 75 which may mesh with the gear 6G. The lower end of the collar is provided with clutch teeth 7 6 which may mesh with clutch teeth 77 yon the gear 71. The shaft 70 is connected to shaft 78 on which the lower roll 42 is mounted through the bevel gears 79. Thegeare 66, 68, 69, 71, 74 and 75 provide a change speed mechanism for driving the feeding rolls. If the clutch teeth 7 6 of the collar 7 2 rengage the clutch teeth 77 of the gear 71,

the rollers are driven through the gears 69 and 71. If the collar isshifted yto Vbring either the gear 74 into mesh with the 'gear' G8 or the gears 75 into mesh with the gear 6G the rolls are correspondingly driven from these gears, and as they are of dierent dianieters the speed of the 'rolls may be varied through this mechanism. The collar 72 is shifted by means of the rack 8O (Fig. 1') engaging a gear 81 operated by a crank By swinging this crank to the l'iigh or low or intermediate positions indicated the speed of rotation of t-he feed rollers and thus vthe rate of feed of the lace may be varied, will be obvious.v There is a clutch between the woriny gear 64 and the shaft 83 carrying the gear 65 as shown in F ig. l. The worin gear 64' is mounted ona sleeve 84C which is mounted to rotate in a bearing 85 in thebase and carries the external clutch member 8o. An internal clutch member 87 is mounted to slide'oii the shaft' 83 and is, splined tol rotate therewith, and itmay be shifted to and from engagement with the external clutch ineinber 86by means of a lever 88 andthe fork v 89. A spring 90tendsto hold the clutch in dri-ving position.

In the present construction I havemounted on the under side of the plate 28, as shown in Figs. 6,7 and 9, a fibre pad91 held in any suitable holding means 92. The plate is provided with a passage 93 leading to the upper side of the pad from a nipple 94 which is connected to a. tube 95 in turn connected to an oilV cup, vnot shown. By this means oil is' conducted from the cup tol the pad 91 which is mounted immediately above the blades 26, and therefore, as these blades rotate they come in contact with the under side of the pad and are lubricated by the oil on the pad so'that they do not become hot and unduly worn by coaction Vwith the stationary blade 27.

In Fig. l0 I have shown a single thickness of lace passing through the device. This would be the arrangement wherey two flat pieces of lace are connected at one edge only,

and it will be seen that the lace passes over the guiding members 35 and under the frame il and guide 38. The operation, however,

is the same as in the'l first arrangement andment it will be obvious that the upper side of the lace must be kept away from the tim er lso picker. The tubular piece of lace is indicated at 96 and the opposite free edges of the strip forming this tubular piece of lace are indicated at 97 and connected by the auxiliary thread vlMtounted above the guiding member198, Which inV this case carries a single star Wheel 99, is a Wire frame i, se

or guide 100. This frame is curved transversely as shown in Fig. 13 so that the lovver portion of the tube -of lace including the free edges 97 and the auxiliary thread 33 is held down against the upper side of the guide member and in` engagement With the star Wheel, and also so that it passes under` the curved guide 8S by which theY auxiliary thread is guided down into the path of movement ofthe teeth 24 on the picker 20. The upper portion of the lace tube, however, is lifted by the frame 100 and passes over the top of the guide LlO and the cover 39, as indicated in `Figs. 1l and 13.'

The separated free edges are spread laterally by the guide t0 as indicated in Fig. l2, and the lace passes through t-he Vfeed rollers t2 spread out flat.

Having thus set forth the nature of my invention, What I claim is:

l'. In a. machine for removing an auxiliary thread from lace, means for pulling out the vfree end of the thread and cutting off the of the thread after ithas been Withdrawn from the lace. A Y

4t. In a device of the character described, a

picker comprising a rotary element having teeth to engage the auxiliary Ythread of a strip of lace and Withdraw the free Yends ofl said thread from the strip, and a cutter for cutting oil the free ends after they have beenV Withdrawn from the lace.

5. In a device of the character described, a picker comprising a rotary element having teeth to engage the auxiliary thread of a stripof lace and Withdraw the free end of said thread from the strip, means for guiding and feeding the strip continuously past said picker, and means for cutting olf the free :ends of the thread after they are Withdrawn from the lace.

6. In a device of the character described,

a picker comprising a rotary element having spaced teeth to engage the auxiliary thread in a strip of lace Vand Withdraw the free ends of said thread from the strip, a cutter in a strip of lace and Withdraw the free ends of said thread from the strip, a cutter comprising a member mounted to rotate in a plane at substantially right angles to the plane of rotation of the picker, said cutter having spaced blades, a stationary blade cooperating With the, rotating blades,` and means for continuously guiding and feeding the lace past said picker. Y 1

8. In a device ol the character described, means for pulling to one side the free ends of the auxiliary thread in a strip lof lace, means for cutting oit1 said free ends after they have been Withdrawn from the lace comprising a rotating member having cutl ting blades, a stationary blade cooperating With the rotating blades, and Vmeans for lubricating the surfaces of the moving blades which engages the stationary blade includmg an oil carrying pad in position to be engaged by the surface ofthe rotary bladesl as they are rotated.

9. In a device of the character described, a picker comprising a member mounted to rotate in an upright plane and having spaced teeth to engage the auxiliary thread joining the free edges of strips of lace to Withdraw the free ends of said thread from the lace, a cutter having blades mounted to rotate in a horizontal plane to cutoff the free ends of the thread after they have been Withdrawn from the lace, means for guida With the edges of the lace on opposite sides thereof, and means for advancing the laceV past said picker.

10. In a device'of thecharacter described, a plate, a rotary picker extendingabove and below the plate andpprovided Withteeth to engage the auxiliary thread of a strip of lace and Withdraw the Vfree ends thereof from the lace, a cutter having blades mounted to rotate beneath the plate in a plane transverse to the plane of the picker, a stationary blade arranged to cooperate With Y the movable blades to cut o the free ends of the thread after they have been Withdrawn from the lace, means for guiding' the lace in proper relation to the picker, and an oiling pad on'the under side of the plate to engage the movable blades.

11. In a device of the character described,

a guiding means, a rotary picker associated A With the guiding means and provided With spaced sets of teeth to engage the auxiliary thread joining the edges of strips of lace in the guiding means to Withdraw the free ends thereof from the lace, a cutter mounted to rotate beneath the guiding means in a plane transverse to the plane of the picker and having a plurality of spaced blades, the picker and cutter being arranged so that the blades pass between the sets of teeth and the teeth between the blades, and a stationary blade cooperating With the movable blades to cut 0E the free ends of the thread after they have been Withdrawn from the lace.

12. In a device of the character described, a picker comprising a member mounted to rotate in an upright plane and provided with teeth on its periphery to engage the auxiliary thread joining the free edges of strips-of lace to pull the free ends ofthe thread from the lace, a cutter having blades mounted to rotate in a plane transverse to the plane of the picker, a stationary blade mounted to cooperate with the movable blades to cut off the free ends of the thread after they have been Withdrawn from the lace, guiding means to hold the llace in proper relation to the picker, and a suction means for carrying away the pieces of thread cut olf.

13. In a device of the character described, a continuously operating picking means arranged to engage the free ends of the auX- iliary thread joining the edges of strips of lace and to Withdraw these ends from the lace, means for cutting off the free ends after they have been Withdrawn from the lace, guiding means to lhold the lace in proper relation to the. picker, feeding rolls to engage the lace and draw it through the guiding means, and means for operating the rolls. v

In testimony whereof I aiiiX my signature.

GUSTAVE A. PIEPENBRING. 

